Dr. Catherine M. Mayer, DO
- Part D claims, 2024
- 45
- Hospital affiliations
- 1
- Industry payments
- $72
- Medical group
- 1
- State license
- 1
- Practice address
- 855 N Westhaven Drive, Oshkosh, WI 54904
- Practice phone
- Call (920) 456-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mayer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Catherine M. Mayer is a general surgeon in Oshkosh, Wisconsin
Dr. Mayer practices at Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin, part of Advocate Health.
Dr. Mayer's NPI, 1649891284, was assigned on May 6, 2020. Dr. Mayer holds Wisconsin license 76035-21.
- NPI
- 1649891284NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709274525
- NPI enumeration date
- May 6, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (920) 456-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Catherine M. Mayer practices at Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin
Dr. Mayer's primary practice is Aurora Medical Center - Oshkosh, at 855 N Westhaven Drive, Oshkosh, WI 54904 in Winnebago County. The practice phone is (920) 456-6000.
- Aurora Medical Center - Oshkosh855 N Westhaven Drive, Oshkosh, WI 54904 · Winnebago CountyPhone(920) 456-6000
Source: Dmand AI Affiliation Data
Dr. Catherine M. Mayer is affiliated with 2 sites of care and 1 medical group
Dr. Mayer's primary practice is Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin, part of Advocate Health. The medical group on file is Aurora Medical Group. Dmand AI also links Dr. Mayer to 1 more dialysis center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Catherine M. Mayer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mayer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aurora Medical Center - Oshkosh | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Advocate Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Catherine M. Mayer is one of 565 general surgeons in Wisconsin
Surgery is Dr. Mayer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Mayer is licensed in Wisconsin.
Specialties and state licenses
- Surgery, WisconsinPrimary
General surgeons near Dr. Mayer
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Catherine M. Mayer's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Mayer's median patient age at 59, with 67% women.
Dr. Mayer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Catherine M. Mayer wrote 45 Medicare Part D claims in 2024
In 2024, Dr. Mayer wrote 45 Medicare Part D claims for 34 patients. 96% of them were for generic drugs. CMS names the drug for 19 of them, across 1 drug with 11 or more claims each, at $30 in total drug cost.
Dr. Mayer's Part D claims by kind of drug, 2024
- Generic43 claims96%
- Brand-name and other2 claims4%
Dr. Mayer's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Mayer's Part D claims, 2024
- Opioids58%26 of 45 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Catherine M. Mayer takes part in Medicare
Dr. Mayer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Catherine M. Mayer received $72 in industry payments in 2025
CMS Open Payments shows 2 general payments to Dr. Mayer from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Applied Medical Resources Corporation paid the most, $45.
Companies that paid Dr. Mayer the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Catherine M. Mayer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Catherine M. Mayer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Catherine M. Mayer's NPI number?
Dr. Catherine M. Mayer's NPI number is 1649891284. It was assigned on May 6, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine M. Mayer?
Dr. Catherine M. Mayer is a general surgeon in Oshkosh, Wisconsin. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Catherine M. Mayer practice?
Dr. Mayer practices at 855 N Westhaven Drive, Oshkosh, WI 54904. Dr. Mayer's primary practice is Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin, part of Advocate Health. Dmand AI also links Dr. Mayer to 1 dialysis center.
What is Dr. Catherine M. Mayer's office phone number?
The practice phone on file for Dr. Mayer is (920) 456-6000.
What is Dr. Catherine M. Mayer's medical license number?
Dr. Mayer holds Wisconsin license 76035-21.
Which hospitals is Dr. Catherine M. Mayer affiliated with?
Dr. Mayer practices at Aurora Medical Center - Oshkosh in Oshkosh, Wisconsin.
What medical group is Dr. Catherine M. Mayer part of?
Dr. Mayer is linked to Aurora Medical Group.
Does Dr. Catherine M. Mayer accept Medicare?
Yes. CMS lists Dr. Mayer as accepting Medicare assignment.
What drugs does Dr. Catherine M. Mayer prescribe most?
In 2024 Medicare Part D data, Dr. Mayer's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Catherine M. Mayer received payments from drug or device companies?
CMS Open Payments shows $72 in general payments to Dr. Mayer from 2 companies from 2025 to 2025. The largest total came from Applied Medical Resources Corporation.
How long has Dr. Catherine M. Mayer been practicing?
Dr. Mayer graduated from medical school in 2020, 6 years ago.
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